4X4 not working

I Have changed the 4x4 switch, motor on the transfer case fixed a bad wire harness driver side kick panel, have vacuum at the two wheel and the four wheel solenoid pass side fire wall. Still do not have 4x4 no clicking/clunking/or engaging at all. Can put direct power to the motor on transfer case and it will engage. But not with the 4x4 switch. Does anyone have any other direction I can go?